Air Quality in Saint-Basile-le-Grand, Canada

Partly Cloudy
24.5°C · 61.2% humidity
24.5°
Feels 24.5°
69
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
56 10am
56
63
69 1pm
67
66
65 4pm
65
64
64 7pm
64
56
56 10pm
56
54
54 1am
54
53
53 4am
53
53
53 7am
53
53
Station readings
59
68
80
CAMS model adj +29
27
27
34
34
34
34
34
34
34
34
34
27
27
27
25
25
25
24
24
24
24
24
24
24
AD 728×90

Air Quality Index Trend

47h · 1 stn

Saint-Basile-le-Grand's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Saint-Basile-le-Grand is 1.4× the WHO 24-hour guideline of 15 µg/m³.

61.2%
Humidity
39.5 km/h
Wind NE
1015.5 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
69
20.7 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Saint-Basile-le-Grand?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.520.7 µg/m³ ×1.4 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (1 station within 25 km)
20.7
Median
20.7
Average
20.7
Low
20.7
High
PM2.5 µg/m³ · Model: 13.7 · Bias: -7.0

What is the 7-day forecast for Saint-Basile-le-Grand?

07-21
24.9° 18.3°
07-22
23.8° 16.5°
0.31 mm
07-23
19.4° 13.4°
5.88 mm
07-24
22.8° 12.3°
1.69 mm
07-25
20.3° 17.0°
18.0 mm
07-26
21.1° 16.0°
6.37 mm
07-27
26.2° 18.4°
0.62 mm
Both models agree Avg diff: 2.3°C

Where are air quality stations near Saint-Basile-le-Grand?

1
Vallée-du-Richelieu, Quebec, Canada
9.5 km PM2.5: 0.2 µg/m³
69
Vallée-du-Richelieu, Quebec, Canada
9.5 km PM2.5: 20.7 µg/m³
34
Vallée-du-Richelieu, Quebec, Canada
9.5 km PM2.5: 8.2 µg/m³
24
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
17.7 km PM2.5: 5.8 µg/m³
193
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
17.7 km PM2.5: 136.8 µg/m³
132
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
17.7 km PM2.5: 48.1 µg/m³
37
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
17.7 km PM2.5: 8.9 µg/m³
–
canada-montreal-rue-leclaire
19.4 km PM2.5: 0.0 µg/m³
80
canada-montreal-rue-ida-steinberg
19.7 km PM2.5: 25.9 µg/m³
40
Montreal
21.3 km PM2.5: 9.6 µg/m³

What cities are near Saint-Basile-le-Grand?

69 Saint-Bruno-de-Montarville 69 Sainte-Julie 54 Beloeil 54 Mont-Saint-Hilaire 60 Chambly 70 Saint-Hubert 72 Boucherville 72 Longueuil 71 Laflèche 71 Greenfield Park
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:26 UTC.